Publications
369 results found
Gil AG, Wu Z, Chadwick D, et al., 2015, Microstructured Catalytic Hollow Fiber Reactor for Methane Steam Reforming, Industrial & Engineering Chemistry Research, Vol: 54, Pages: 5563-5571, ISSN: 1520-5045
Microstructured alumina hollow fibers, which contain a plurality of radial microchannels with significant openings on the inner surface, have been fabricated in this study and used to develop an efficient catalytic hollow fiber reactor. Apart from low mass-transfer resistance, a unique structure of this type facilitates the incorporation of Ni-based catalysts, which can be with or without the aged secondary support, SBA-15. In contrast to a fixed bed reactor, the catalytic hollow fiber reactor shows similar methane conversion, with a gas hourly space velocity that is approximately 6.5 times higher, a significantly greater CO2 selectivity, and better productivity rates. These results demonstrate the advantages of dispersing the catalyst inside the microstructured hollow fiber as well as the potential to reduce the required quantity of catalyst.
Othman NH, Wu Z, Li K, 2015, Micro-structured Bi1.5Y0.3Sm0.2O3−δ catalysts for oxidative coupling of methane, AICHE Journal, Vol: 61, Pages: 3451-3458, ISSN: 0001-1541
Bi1.5Y0.3Sm0.2O3−δ (BYS), a ceramic material showing great activity and selectivity to oxidative coupling of methane (OCM), has been fabricated into catalyst rings (i.e., capillary tubes) with a plurality of self-organized radial microchannels. The unique microchannels inside such BYS catalyst rings allow easier access of reactants, as well as increased the surface area, which potentially contributes to higher reaction efficiencies due to improved mass transfer. The micro-structured BYS catalyst rings were investigated systematically via two types of reactors; (1) randomly packed fixed bed reactor and (2) monolithic-like structured reactor. These two reactor designs have different flow patterns of reactants, that is, non-ideal and ideal flows, which can significantly affect the final OCM performance. A remarkable improvement in C2+ yield (YC2+ > 20%) was obtained in the monolith-like structured reactor, in contrast to randomly packed powder and micro-structured rings (YC2+ < 15%), which proves the advantages of using a micro-structured catalyst with an ideal flow in the feed for OCM.
Lee M, Wang B, Wu Z, et al., 2015, Formation of micro-channels in ceramic membranes - Spatial structure, simulation, and potential use in water treatment, JOURNAL OF MEMBRANE SCIENCE, Vol: 483, Pages: 1-14, ISSN: 0376-7388
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- Citations: 51
Li T, 2015, Micro-structured hollow fibers for micro-tubular solid oxide fuel cells
Ho WSW, Li K, 2015, Editorial overview: Separation engineering: Recent progress in separation science and technology, CURRENT OPINION IN CHEMICAL ENGINEERING, Vol: 8, Pages: VII-X, ISSN: 2211-3398
Li T, Wu Z, Li K, 2015, High-efficiency, nickel-ceramic composite anode current collector for micro-tubular solid oxide fuel cells, JOURNAL OF POWER SOURCES, Vol: 280, Pages: 446-452, ISSN: 0378-7753
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- Citations: 17
Zhou S, Xue A, Zhang Y, et al., 2015, Novel polyamidoamine dendrimer-functionalized palygorskite adsorbents with high adsorption capacity for Pb<SUP>2+</SUP> and reactive dyes, APPLIED CLAY SCIENCE, Vol: 107, Pages: 220-229, ISSN: 0169-1317
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- Citations: 67
Mautner A, Lee K-Y, Li K, et al., 2015, Designing the porosity of bacterial cellulose nanopapers, Publisher: AMER CHEMICAL SOC, ISSN: 0065-7727
Lee M, Wu Z, Li K, 2015, Advances in ceramic membranes for water treatment, Advances in Membrane Technologies for Water Treatment: Materials, Processes and Applications, Pages: 43-82, ISBN: 9781782421214
Porous ceramic membranes can offer a more robust and long-term alternative to polymeric membranes in aqueous microfiltration and ultrafiltration processes. Their superior chemical, thermal and mechanical properties mean that not only can they be operated under harsh conditions, they can also be backwashed and cleaned with strong cleaning agents as well as sterilized at high temperatures, offering reliable performance over long periods of time. These ceramic membranes are conventionally fabricated via multiple layer deposition steps on top of a membrane substrate followed by several heat treatment sessions to achieve the desired final selectivity for micro- or ultrafiltration. Because of the large number of steps required, conventional methods are time- and energy-consuming, contributing to the high capital costs of ceramic membranes. The combined phase-inversion and sintering technique is an emerging method for the fabrication of ceramic membranes and considerably reduces the number of steps required by eliminating the need to deposit layers on a substrate; thus, only one heat treatment step is required. Furthermore, it can produce membranes with a wide range of unique microstructures, which can be tailored for the application. The ability to produce much thinner hollow-fibre membranes can improve packing density considerably compared with the commonly used flat-sheet and tubular modules. This simpler fabrication cycle can potentially reduce the costs of ceramic membranes, but currently further research and development is required before commercialization of this method can commence. Potential applications of ceramic membranes for water treatment include the production of drinking water, treatment of municipal and industrial wastewater, treatment of produced water and use in the food and beverage industries. Successful implementation of ceramic membranes in these industries has been achieved with stable and long-term operation but the high capital cost of ceramic me
Gil AG, Reis MHM, Chadwick D, et al., 2015, A highly permeable hollow fibre substrate for Pd/Al<sub>2</sub>O<sub>3</sub> composite membranes in hydrogen permeation, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, Vol: 40, Pages: 3249-3258, ISSN: 0360-3199
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- Citations: 27
Othman MHD, Rahman MA, Li K, et al., 2015, Ceramic Hollow-Fiber Support through a Phase Inversion-Based Extrusion/Sintering Technique for High- Temperature Energy Conversion Systems, Membrane Fabrication, Pages: 347-382, ISBN: 9781482210453
Over the years, ceramic membrane has demonstrated many advantages compared to polymeric membrane due to its superior thermal stability, excellent chemical resistance, and great mechanical strength. Figure 11.1 shows the timeline for the development of ceramic membrane technology over the last 80 years. Despite examples such as the development and implementation of ceramic membranes for uranium enrichment during the Manhattan project in 1942, and later by the French Atomic Agency in the 1950s, it was not until the 1980s that ceramic membrane research started to develop in earnest and ceramic membranes were applied to more conventional applications such as ltration and gas separation. The increased use of ceramic membranes in recent years is driven by their advantages over traditional technologies.
Wu Z, Kingsbury BFK, Li K, 2015, Microstructured Ceramic Hollow-Fiber Membranes: Development and Application, Membrane Fabrication, Pages: 317-346, ISBN: 9781482210453
Wastewater Treatment 326 10.4.2 A Controlled Sintering Process for a More Permeable Alumina Membrane
Kleiminger L, Kelsall GH, Li T, et al., 2015, Effects of current collector materials on performances of micro-tubular solid oxide electrolysers for splitting CO<inf>2</inf>, Pages: 3449-3458, ISSN: 1938-6737
Specific surface areas of micro-tubular solid oxide electrolysers (MT-SOEs) increase with the reciprocal of their lumen diameters. However, this benefit over planar counterparts may be offset by difficulties in fabricating effective current collectors for < 1 mm diameter inner electrodes, causing significant potential losses, decreasing their performance. Hence, the effects were investigated of different current collector materials for the inner cathodes of such SOEs for splitting CO2. Ohmic area-specific resistances were lowest for silver wire-based compared to nickel wire-based current collectors, due to silver's higher electronic conductivity. However, silver's lower mechanical strength required addition of silver paste for effective connections, but the paste interfered with the electrode process, increasing the area-specific electrode polarization at 1.5 V by > 300% at 700 and 800°C. Microstructural analysis suggested the silver paste caused partial blockage of surface pores. MT-SOEs with only nickel wire current collectors achieved 1 A cm-2 at 1.5 V.
Li T, Wu Z, Li K, 2015, Co-extrusion of electrolyte/anode functional layer/anode triple-layer ceramic hollow fibres for micro-tubular solid oxide fuel cells-electrochemical performance study, JOURNAL OF POWER SOURCES, Vol: 273, Pages: 999-1005, ISSN: 0378-7753
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- Citations: 35
Bismarck A, Li K, Livingston A, 2015, Editorial "Polymers for membrane applications", REACTIVE & FUNCTIONAL POLYMERS, Vol: 86, Pages: 87-87, ISSN: 1381-5148
Ji J, Liu F, Hashim NA, et al., 2015, Poly(vinylidene fluoride) (PVDF) membranes for fluid separation, REACTIVE & FUNCTIONAL POLYMERS, Vol: 86, Pages: 134-153, ISSN: 1381-5148
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- Citations: 99
Jamil SM, Othman MHD, Rahman MA, et al., 2015, Recent fabrication techniques for micro-tubular solid oxide fuel cell support: A review, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 35, Pages: 1-22, ISSN: 0955-2219
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- Citations: 125
Mautner A, Lee K-Y, Tammelin T, et al., 2015, Cellulose nanopapers as tight aqueous ultra-filtration membranes, REACTIVE & FUNCTIONAL POLYMERS, Vol: 86, Pages: 209-214, ISSN: 1381-5148
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- Citations: 121
Tan X, Li K, 2015, Fundamentals of Membrane Reactors, INORGANIC MEMBRANE REACTORS: FUNDAMENTALS AND APPLICATIONS, Publisher: BLACKWELL SCIENCE PUBL, Pages: 1-26, ISBN: 978-1-118-67284-6
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- Citations: 1
Tan X, Li K, 2015, Membrane Microreactors, INORGANIC MEMBRANE REACTORS: FUNDAMENTALS AND APPLICATIONS, Publisher: BLACKWELL SCIENCE PUBL, Pages: 227-250, ISBN: 978-1-118-67284-6
Tan X, Li K, 2015, Design of Membrane Reactors, INORGANIC MEMBRANE REACTORS: FUNDAMENTALS AND APPLICATIONS, Publisher: BLACKWELL SCIENCE PUBL, Pages: 251-278, ISBN: 978-1-118-67284-6
Tan X, Li K, 2015, Dense Ceramic Oxygen-Permeable Membrane Reactors, INORGANIC MEMBRANE REACTORS: FUNDAMENTALS AND APPLICATIONS, Publisher: BLACKWELL SCIENCE PUBL, Pages: 143-185, ISBN: 978-1-118-67284-6
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- Citations: 1
Tan X, Li K, 2015, Proton-Conducting Ceramic Membrane Reactors, INORGANIC MEMBRANE REACTORS: FUNDAMENTALS AND APPLICATIONS, Publisher: BLACKWELL SCIENCE PUBL, Pages: 187-213, ISBN: 978-1-118-67284-6
Tan X, Li K, 2015, Inorganic Membrane Reactors: Fundamentals and Applications, Publisher: BLACKWELL SCIENCE PUBL, ISBN: 978-1-118-67284-6
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- Citations: 17
Tan X, Li K, 2015, Dense Metallic Membrane Reactors, INORGANIC MEMBRANE REACTORS: FUNDAMENTALS AND APPLICATIONS, Publisher: BLACKWELL SCIENCE PUBL, Pages: 101-142, ISBN: 978-1-118-67284-6
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- Citations: 1
Tan X, Li K, 2015, Zeolite Membrane Reactors, INORGANIC MEMBRANE REACTORS: FUNDAMENTALS AND APPLICATIONS, Publisher: BLACKWELL SCIENCE PUBL, Pages: 75-100, ISBN: 978-1-118-67284-6
Tan X, Li K, 2015, Porous Membrane Reactors, INORGANIC MEMBRANE REACTORS: FUNDAMENTALS AND APPLICATIONS, Publisher: BLACKWELL SCIENCE PUBL, Pages: 27-73, ISBN: 978-1-118-67284-6
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- Citations: 1
Tan X, Li K, 2015, Inorganic Membrane Reactors Fundamentals and Applications Preface, INORGANIC MEMBRANE REACTORS: FUNDAMENTALS AND APPLICATIONS, Publisher: BLACKWELL SCIENCE PUBL, Pages: XI-XIII, ISBN: 978-1-118-67284-6
Tan X, Li K, 2015, Fluidized Bed Membrane Reactors, INORGANIC MEMBRANE REACTORS: FUNDAMENTALS AND APPLICATIONS, Publisher: BLACKWELL SCIENCE PUBL, Pages: 215-226, ISBN: 978-1-118-67284-6
Liu X, Li Y, Ban Y, et al., 2014, Synthesis of zeolitic imidazolate framework nanocrystals, MATERIALS LETTERS, Vol: 136, Pages: 341-344, ISSN: 0167-577X
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- Citations: 12
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